I spent massive amounts of time on Lego Technic when I was a kid, but I never went as far mechanically as this. He made the Super 8 projector using only Lego plus lamp, lens and rolls. I Wish I had time for more Lego too. With mindstorm you can make almost anything.
For my own contribution, my Laser-tagging robot can actually paint with light, just need a strong laser. Looks like the projector video has gone viral. What should I make with Lego? Hmm… Ideas anyone?